125757451 has 2 divisors, whose sum is σ = 125757452. Its totient is φ = 125757450.

The previous prime is 125757439. The next prime is 125757461. The reversal of 125757451 is 154757521.

It is a strong prime.

It is an emirp because it is prime and its reverse (154757521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125757451 - 2²³ = 117368843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125757451.

It is not a weakly prime, because it can be changed into another prime (125757431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62878725 + 62878726.

It is an arithmetic number, because the mean of its divisors is an integer number (62878726).

Almost surely, 2^125757451 is an apocalyptic number.

125757451 is the 6475-th hex number.

125757451 is a deficient number, since it is larger than the sum of its proper divisors (1).

125757451 is an equidigital number, since it uses as much as digits as its factorization.

125757451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49000, while the sum is 37.

The square root of 125757451 is about 11214.1629647513. The cubic root of 125757451 is about 501.0079015703.

The spelling of 125757451 in words is "one hundred twenty-five million, seven hundred fifty-seven thousand, four hundred fifty-one".