70625520 has 280 divisors, whose sum is σ = 282990816. Its totient is φ = 16049664.

The previous prime is 70625519. The next prime is 70625539. The reversal of 70625520 is 2552607.

It is a tau number, because it is divible by the number of its divisors (280).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 408154 + ... + 408326.

Almost surely, 2^70625520 is an apocalyptic number.

70625520 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70625520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141495408).

70625520 is an abundant number, since it is smaller than the sum of its proper divisors (212365296).

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

70625520 is a wasteful number, since it uses less digits than its factorization.

70625520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 70625520 is about 8403.8990950630. The cubic root of 70625520 is about 413.3524849491.

The spelling of 70625520 in words is "seventy million, six hundred twenty-five thousand, five hundred twenty".