125614639 has 2 divisors, whose sum is σ = 125614640. Its totient is φ = 125614638.

The previous prime is 125614591. The next prime is 125614669. The reversal of 125614639 is 936416521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125614639 - 2¹³ = 125606447 is a prime.

It is a super-2 number, since 2×125614639² = 31558075062200642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125614598 and 125614607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125614669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62807319 + 62807320.

It is an arithmetic number, because the mean of its divisors is an integer number (62807320).

Almost surely, 2^125614639 is an apocalyptic number.

125614639 is a deficient number, since it is larger than the sum of its proper divisors (1).

125614639 is an equidigital number, since it uses as much as digits as its factorization.

125614639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 125614639 is about 11207.7936722622. The cubic root of 125614639 is about 500.8181791023.

It can be divided in two parts, 125614 and 639, that added together give a triangular number (126253 = T₅₀₂).

The spelling of 125614639 in words is "one hundred twenty-five million, six hundred fourteen thousand, six hundred thirty-nine".