90025051 has 4 divisors (see below), whose sum is σ = 90045000. Its totient is φ = 90005104.

The previous prime is 90024997. The next prime is 90025057. The reversal of 90025051 is 15052009.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90025051 - 2⁷ = 90024923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90025057) 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, 375 + ... + 13423.

It is an arithmetic number, because the mean of its divisors is an integer number (22511250).

Almost surely, 2^90025051 is an apocalyptic number.

90025051 is a deficient number, since it is larger than the sum of its proper divisors (19949).

90025051 is a wasteful number, since it uses less digits than its factorization.

90025051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19948.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 90025051 is about 9488.1531922709. The cubic root of 90025051 is about 448.1820499357.

The spelling of 90025051 in words is "ninety million, twenty-five thousand, fifty-one".