625240090 has 32 divisors (see below), whose sum is σ = 1135440000. Its totient is φ = 247883328.

The previous prime is 625240067. The next prime is 625240111. The reversal of 625240090 is 90042526.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753796 + ... + 754624.

It is an arithmetic number, because the mean of its divisors is an integer number (35482500).

Almost surely, 2^625240090 is an apocalyptic number.

625240090 is a deficient number, since it is larger than the sum of its proper divisors (510199910).

625240090 is a wasteful number, since it uses less digits than its factorization.

625240090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 625240090 is about 25004.8013389429. The cubic root of 625240090 is about 855.0974388227.

The spelling of 625240090 in words is "six hundred twenty-five million, two hundred forty thousand, ninety".