25694370624 has 336 divisors, whose sum is σ = 78714478080. Its totient is φ = 7371786240.

The previous prime is 25694370619. The next prime is 25694370631. The reversal of 25694370624 is 42607349652.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 43772059 + ... + 43772645.

It is an arithmetic number, because the mean of its divisors is an integer number (234269280).

Almost surely, 2^25694370624 is an apocalyptic number.

25694370624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25694370624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39357239040).

25694370624 is an abundant number, since it is smaller than the sum of its proper divisors (53020107456).

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

25694370624 is a wasteful number, since it uses less digits than its factorization.

25694370624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 25694370624 in words is "twenty-five billion, six hundred ninety-four million, three hundred seventy thousand, six hundred twenty-four".