70621425 has 36 divisors (see below), whose sum is σ = 144564160. Its totient is φ = 32283360.

The previous prime is 70621399. The next prime is 70621433. The reversal of 70621425 is 52412607.

It is not a de Polignac number, because 70621425 - 2⁶ = 70621361 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20845 + ... + 23994.

Almost surely, 2^70621425 is an apocalyptic number.

70621425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

70621425 is an abundant number, since it is smaller than the sum of its proper divisors (73942735).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70621425 is a wasteful number, since it uses less digits than its factorization.

70621425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44862 (or 44854 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 70621425 is about 8403.6554546221. The cubic root of 70621425 is about 413.3444958108.

The spelling of 70621425 in words is "seventy million, six hundred twenty-one thousand, four hundred twenty-five".