25843915023537 has 32 divisors (see below), whose sum is σ = 37200701059200. Its totient is φ = 15864743803392.

The previous prime is 25843915023491. The next prime is 25843915023547. The reversal of 25843915023537 is 73532051934852.

It is a de Polignac number, because none of the positive numbers 2^k-25843915023537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25843915023547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235075693 + ... + 235185605.

It is an arithmetic number, because the mean of its divisors is an integer number (1162521908100).

Almost surely, 2^{25843915023537} is an apocalyptic number.

It is an amenable number.

25843915023537 is a deficient number, since it is larger than the sum of its proper divisors (11356786035663).

25843915023537 is a wasteful number, since it uses less digits than its factorization.

25843915023537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124737.

The product of its (nonzero) digits is 27216000, while the sum is 57.

The spelling of 25843915023537 in words is "twenty-five trillion, eight hundred forty-three billion, nine hundred fifteen million, twenty-three thousand, five hundred thirty-seven".