398086525 has 6 divisors (see below), whose sum is σ = 493627322. Its totient is φ = 318469200.

The previous prime is 398086519. The next prime is 398086541. The reversal of 398086525 is 525680893.

It can be written as a sum of positive squares in 3 ways, for example, as 24940036 + 373146489 = 4994^2 + 19317^2 .

It is not a de Polignac number, because 398086525 - 2¹⁵ = 398053757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7961706 + ... + 7961755.

Almost surely, 2^398086525 is an apocalyptic number.

It is an amenable number.

398086525 is a deficient number, since it is larger than the sum of its proper divisors (95540797).

398086525 is a wasteful number, since it uses less digits than its factorization.

398086525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15923471 (or 15923466 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The square root of 398086525 is about 19952.1057785889. The cubic root of 398086525 is about 735.6295376125.

The spelling of 398086525 in words is "three hundred ninety-eight million, eighty-six thousand, five hundred twenty-five".