23025402540 has 144 divisors (see below), whose sum is σ = 81174562560. Its totient is φ = 5173729920.

The previous prime is 23025402523. The next prime is 23025402553. The reversal of 23025402540 is 4520452032.

It is a happy number.

23025402540 is a `hidden beast` number, since 230 + 25 + 402 + 5 + 4 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80526 + ... + 229205.

It is an arithmetic number, because the mean of its divisors is an integer number (563712240).

Almost surely, 2^23025402540 is an apocalyptic number.

23025402540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23025402540 is an abundant number, since it is smaller than the sum of its proper divisors (58149160020).

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

23025402540 is a wasteful number, since it uses less digits than its factorization.

23025402540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309812 (or 309807 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 23025402540 its reverse (4520452032), we get a palindrome (27545854572).

The spelling of 23025402540 in words is "twenty-three billion, twenty-five million, four hundred two thousand, five hundred forty".