22415916357025 has 27 divisors (see below), whose sum is σ = 28401127572019. Its totient is φ = 17550314416880.

The previous prime is 22415916357007. The next prime is 22415916357047. The reversal of 22415916357025 is 52075361951422.

It is a happy number.

The square root of 22415916357025 is 4734545.

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., 8069729888529 + 14346186468496 = 2840727^2 + 3787636^2 .

It is not a de Polignac number, because 22415916357025 - 2²⁹ = 22415379486113 is a prime.

It is a super-2 number, since 2×22415916357025² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1112608002 + ... + 1112628148.

Almost surely, 2^{22415916357025} is an apocalyptic number.

22415916357025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22415916357025 is the 4734545-th square number.

22415916357025 is the 2367273-rd centered octagonal number.

It is an amenable number.

22415916357025 is a deficient number, since it is larger than the sum of its proper divisors (5985211214994).

22415916357025 is an frugal number, since it uses more digits than its factorization.

22415916357025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40398 (or 20199 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 52.

It can be divided in two parts, 224159 and 16357025, that added together give a square (16581184 = 4072²).

The spelling of 22415916357025 in words is "twenty-two trillion, four hundred fifteen billion, nine hundred sixteen million, three hundred fifty-seven thousand, twenty-five".