25701840234 has 24 divisors (see below), whose sum is σ = 63642652320. Its totient is φ = 7343382888.

The previous prime is 25701840221. The next prime is 25701840253. The reversal of 25701840234 is 43204810752.

It is a happy number.

25701840234 is a `hidden beast` number, since 2 + 570 + 1 + 84 + 0 + 2 + 3 + 4 = 666.

It is a super-2 number, since 2×25701840234² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

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, 101991304 + ... + 101991555.

It is an arithmetic number, because the mean of its divisors is an integer number (2651777180).

Almost surely, 2^25701840234 is an apocalyptic number.

25701840234 is an abundant number, since it is smaller than the sum of its proper divisors (37940812086).

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

25701840234 is a wasteful number, since it uses less digits than its factorization.

25701840234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203982874 (or 203982871 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 25701840234 in words is "twenty-five billion, seven hundred one million, eight hundred forty thousand, two hundred thirty-four".