25023210128 has 40 divisors (see below), whose sum is σ = 55761496512. Its totient is φ = 10655918208.

The previous prime is 25023210127. The next prime is 25023210131. The reversal of 25023210128 is 82101232052.

It is a super-2 number, since 2×25023210128² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25023210097 and 25023210106.

It is not an unprimeable number, because it can be changed into a prime (25023210127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693950 + ... + 729117.

Almost surely, 2^25023210128 is an apocalyptic number.

25023210128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25023210128 is an abundant number, since it is smaller than the sum of its proper divisors (30738286384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25023210128 is a wasteful number, since it uses less digits than its factorization.

25023210128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423239 (or 1423233 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The spelling of 25023210128 in words is "twenty-five billion, twenty-three million, two hundred ten thousand, one hundred twenty-eight".