70525631 has 4 divisors (see below), whose sum is σ = 76937064. Its totient is φ = 64114200.

The previous prime is 70525621. The next prime is 70525657. The reversal of 70525631 is 13652507.

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 70525631 - 2²⁶ = 3416767 is a prime.

It is a super-2 number, since 2×70525631² = 9947729255896322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70525594 and 70525603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70525621) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3205700 + ... + 3205721.

It is an arithmetic number, because the mean of its divisors is an integer number (19234266).

Almost surely, 2^70525631 is an apocalyptic number.

70525631 is a deficient number, since it is larger than the sum of its proper divisors (6411433).

70525631 is a wasteful number, since it uses less digits than its factorization.

70525631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6411432.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 70525631 is about 8397.9539770113. The cubic root of 70525631 is about 413.1575183728.

The spelling of 70525631 in words is "seventy million, five hundred twenty-five thousand, six hundred thirty-one".