3990071725 has 24 divisors (see below), whose sum is σ = 5211789440. Its totient is φ = 3021909120.

The previous prime is 3990071719. The next prime is 3990071731. The reversal of 3990071725 is 5271700993.

It is an interprime number because it is at equal distance from previous prime (3990071719) and next prime (3990071731).

It is not a de Polignac number, because 3990071725 - 2²³ = 3981683117 is a prime.

It is a congruent number.

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, 1084489 + ... + 1088161.

Almost surely, 2^3990071725 is an apocalyptic number.

It is an amenable number.

3990071725 is a deficient number, since it is larger than the sum of its proper divisors (1221717715).

3990071725 is a wasteful number, since it uses less digits than its factorization.

3990071725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5989 (or 5984 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 3990071725 is about 63167.0145329032. The cubic root of 3990071725 is about 1586.0866176806.

The spelling of 3990071725 in words is "three billion, nine hundred ninety million, seventy-one thousand, seven hundred twenty-five".