25887740706 has 48 divisors (see below), whose sum is σ = 58481280000. Its totient is φ = 8266061664.

The previous prime is 25887740633. The next prime is 25887740713. The reversal of 25887740706 is 60704778852.

It is a happy number.

It is a super-2 number, since 2×25887740706² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128956 + ... + 261543.

It is an arithmetic number, because the mean of its divisors is an integer number (1218360000).

Almost surely, 2^25887740706 is an apocalyptic number.

25887740706 is an abundant number, since it is smaller than the sum of its proper divisors (32593539294).

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

25887740706 is a wasteful number, since it uses less digits than its factorization.

25887740706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390663 (or 390660 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 54.

The spelling of 25887740706 in words is "twenty-five billion, eight hundred eighty-seven million, seven hundred forty thousand, seven hundred six".