625601405 has 16 divisors (see below), whose sum is σ = 881967744. Its totient is φ = 419983680.

The previous prime is 625601401. The next prime is 625601419. The reversal of 625601405 is 504106526.

It is not a de Polignac number, because 625601405 - 2² = 625601401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625601401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436769 + ... + 438198.

It is an arithmetic number, because the mean of its divisors is an integer number (55122984).

Almost surely, 2^625601405 is an apocalyptic number.

625601405 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

625601405 is a deficient number, since it is larger than the sum of its proper divisors (256366339).

625601405 is a wasteful number, since it uses less digits than its factorization.

625601405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874996.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 625601405 is about 25012.0252078875. The cubic root of 625601405 is about 855.2621222465.

The spelling of 625601405 in words is "six hundred twenty-five million, six hundred one thousand, four hundred five".