125425501 has 2 divisors, whose sum is σ = 125425502. Its totient is φ = 125425500.

The previous prime is 125425457. The next prime is 125425511. The reversal of 125425501 is 105524521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73513476 + 51912025 = 8574^2 + 7205^2 .

It is an emirp because it is prime and its reverse (105524521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125425501 - 2⁹ = 125424989 is a prime.

It is a super-2 number, since 2×125425501² = 31463112602202002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125425511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62712750 + 62712751.

It is an arithmetic number, because the mean of its divisors is an integer number (62712751).

Almost surely, 2^125425501 is an apocalyptic number.

It is an amenable number.

125425501 is a deficient number, since it is larger than the sum of its proper divisors (1).

125425501 is an equidigital number, since it uses as much as digits as its factorization.

125425501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 125425501 is about 11199.3527045093. The cubic root of 125425501 is about 500.5666921440.

The spelling of 125425501 in words is "one hundred twenty-five million, four hundred twenty-five thousand, five hundred one".