19001244025 has 27 divisors (see below), whose sum is σ = 24884040783. Its totient is φ = 14391018000.

The previous prime is 19001244013. The next prime is 19001244037. The reversal of 19001244025 is 52044210091.

The square root of 19001244025 is 137845.

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

It is an interprime number because it is at equal distance from previous prime (19001244013) and next prime (19001244037).

It can be written as a sum of positive squares in only one way, i.e., 6840447849 + 12160796176 = 82707^2 + 110276^2 .

It is not a de Polignac number, because 19001244025 - 2¹¹ = 19001241977 is a prime.

It is a super-2 number, since 2×19001244025² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19001243984 and 19001244002.

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, 13094550 + ... + 13096000.

Almost surely, 2^19001244025 is an apocalyptic number.

19001244025 is the 137845-th square number.

19001244025 is the 68923-rd centered octagonal number.

It is an amenable number.

19001244025 is a deficient number, since it is larger than the sum of its proper divisors (5882796758).

19001244025 is an frugal number, since it uses more digits than its factorization.

19001244025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950 (or 1475 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 19001244025 in words is "nineteen billion, one million, two hundred forty-four thousand, twenty-five".