992525021 has 4 divisors (see below), whose sum is σ = 1044763200. Its totient is φ = 940286844.

The previous prime is 992524997. The next prime is 992525099. The reversal of 992525021 is 120525299.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-992525021 is a prime.

It is a super-2 number, since 2×992525021² = 1970211834622100882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992525321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26119061 + ... + 26119098.

It is an arithmetic number, because the mean of its divisors is an integer number (261190800).

Almost surely, 2^992525021 is an apocalyptic number.

It is an amenable number.

992525021 is a deficient number, since it is larger than the sum of its proper divisors (52238179).

992525021 is a wasteful number, since it uses less digits than its factorization.

992525021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52238178.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 992525021 is about 31504.3651102510. The cubic root of 992525021 is about 997.5021060544.

The spelling of 992525021 in words is "nine hundred ninety-two million, five hundred twenty-five thousand, twenty-one".