25747040641 has 24 divisors (see below), whose sum is σ = 31394762784. Its totient is φ = 21029843520.

The previous prime is 25747040639. The next prime is 25747040677. The reversal of 25747040641 is 14604074752.

It is not a de Polignac number, because 25747040641 - 2¹ = 25747040639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25747040594 and 25747040603.

It is not an unprimeable number, because it can be changed into a prime (25747040941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62635 + ... + 235408.

It is an arithmetic number, because the mean of its divisors is an integer number (1308115116).

Almost surely, 2^25747040641 is an apocalyptic number.

It is an amenable number.

25747040641 is a deficient number, since it is larger than the sum of its proper divisors (5647722143).

25747040641 is a wasteful number, since it uses less digits than its factorization.

25747040641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298141 (or 298134 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 40.

The spelling of 25747040641 in words is "twenty-five billion, seven hundred forty-seven million, forty thousand, six hundred forty-one".