19426925425 has 12 divisors (see below), whose sum is σ = 24097207680. Its totient is φ = 15536495120.

The previous prime is 19426925393. The next prime is 19426925447. The reversal of 19426925425 is 52452962491.

It is a happy number.

It is not a de Polignac number, because 19426925425 - 2⁵ = 19426925393 is a prime.

It is a super-2 number, since 2×19426925425² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46597 + ... + 202546.

It is an arithmetic number, because the mean of its divisors is an integer number (2008100640).

Almost surely, 2^19426925425 is an apocalyptic number.

It is an amenable number.

19426925425 is a deficient number, since it is larger than the sum of its proper divisors (4670282255).

19426925425 is a wasteful number, since it uses less digits than its factorization.

19426925425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252272 (or 252267 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 49.

The spelling of 19426925425 in words is "nineteen billion, four hundred twenty-six million, nine hundred twenty-five thousand, four hundred twenty-five".