4426626642025 has 81 divisors (see below), whose sum is σ = 6529033365399. Its totient is φ = 2968495356960.

The previous prime is 4426626642019. The next prime is 4426626642037. The reversal of 4426626642025 is 5202466266244.

The square root of 4426626642025 is 2103955.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1593585591129 + 2833041050896 = 1262373^2 + 1683164^2 .

It is not a de Polignac number, because 4426626642025 - 2⁵ = 4426626641993 is a prime.

It is a super-2 number, since 2×4426626642025² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4426626642025.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 3461005336 + ... + 3461006614.

Almost surely, 2^{4426626642025} is an apocalyptic number.

4426626642025 is the 2103955-th square number.

4426626642025 is the 1051978-th centered octagonal number.

It is an amenable number.

4426626642025 is a deficient number, since it is larger than the sum of its proper divisors (2102406723374).

4426626642025 is an frugal number, since it uses more digits than its factorization.

4426626642025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 49.

Multiplying 4426626642025 by its sum of digits (49), we get a square (216904705459225 = 14727685²).

4426626642025 divided by its sum of digits (49) gives a square (90339319225 = 300565²).

The spelling of 4426626642025 in words is "four trillion, four hundred twenty-six billion, six hundred twenty-six million, six hundred forty-two thousand, twenty-five".