90122025 has 72 divisors (see below), whose sum is σ = 175569120. Its totient is φ = 40669440.

The previous prime is 90122017. The next prime is 90122029. The reversal of 90122025 is 52022109.

90122025 is a nontrivial binomial coefficient, being equal to C(13426, 2).

It is not a de Polignac number, because 90122025 - 2³ = 90122017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 90121992 and 90122010.

It is not an unprimeable number, because it can be changed into a prime (90122029) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 503386 + ... + 503564.

It is an arithmetic number, because the mean of its divisors is an integer number (2438460).

Almost surely, 2^90122025 is an apocalyptic number.

90122025 is the 13425-th triangular number and also the 6713-rd hexagonal number.

It is an amenable number.

90122025 is a deficient number, since it is larger than the sum of its proper divisors (85447095).

90122025 is a wasteful number, since it uses less digits than its factorization.

90122025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 90122025 is about 9493.2620842364. The cubic root of 90122025 is about 448.3429177881.

The spelling of 90122025 in words is "ninety million, one hundred twenty-two thousand, twenty-five".