90025915879 has 8 divisors (see below), whose sum is σ = 91588245840. Its totient is φ = 88464801600.

The previous prime is 90025915877. The next prime is 90025915897. The reversal of 90025915879 is 97851952009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90025915879 - 2¹ = 90025915877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90025915877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153892 + ... + 451369.

It is an arithmetic number, because the mean of its divisors is an integer number (11448530730).

Almost surely, 2^90025915879 is an apocalyptic number.

90025915879 is a deficient number, since it is larger than the sum of its proper divisors (1562329961).

90025915879 is a wasteful number, since it uses less digits than its factorization.

90025915879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607841.

The product of its (nonzero) digits is 2041200, while the sum is 55.

The spelling of 90025915879 in words is "ninety billion, twenty-five million, nine hundred fifteen thousand, eight hundred seventy-nine".