25434064536 has 64 divisors (see below), whose sum is σ = 64672320000. Its totient is φ = 8334009216.

The previous prime is 25434064519. The next prime is 25434064553. The reversal of 25434064536 is 63546043452.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25434064519) and next prime (25434064553).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404895 + ... + 463473.

It is an arithmetic number, because the mean of its divisors is an integer number (1010505000).

Almost surely, 2^25434064536 is an apocalyptic number.

It is an amenable number.

25434064536 is an abundant number, since it is smaller than the sum of its proper divisors (39238255464).

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

25434064536 is a wasteful number, since it uses less digits than its factorization.

25434064536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58896 (or 58892 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 42.

The spelling of 25434064536 in words is "twenty-five billion, four hundred thirty-four million, sixty-four thousand, five hundred thirty-six".