625138379 has 2 divisors, whose sum is σ = 625138380. Its totient is φ = 625138378.

The previous prime is 625138373. The next prime is 625138391. The reversal of 625138379 is 973831526.

625138379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 625138379 - 2¹⁶ = 625072843 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (625138373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312569189 + 312569190.

It is an arithmetic number, because the mean of its divisors is an integer number (312569190).

Almost surely, 2^625138379 is an apocalyptic number.

625138379 is a deficient number, since it is larger than the sum of its proper divisors (1).

625138379 is an equidigital number, since it uses as much as digits as its factorization.

625138379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 625138379 is about 25002.7674268270. The cubic root of 625138379 is about 855.0510686184.

The spelling of 625138379 in words is "six hundred twenty-five million, one hundred thirty-eight thousand, three hundred seventy-nine".