125363551 has 2 divisors, whose sum is σ = 125363552. Its totient is φ = 125363550.

The previous prime is 125363509. The next prime is 125363573. The reversal of 125363551 is 155363521.

It is a strong prime.

It is an emirp because it is prime and its reverse (155363521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125363551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125363851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62681775 + 62681776.

It is an arithmetic number, because the mean of its divisors is an integer number (62681776).

Almost surely, 2^125363551 is an apocalyptic number.

125363551 is a deficient number, since it is larger than the sum of its proper divisors (1).

125363551 is an equidigital number, since it uses as much as digits as its factorization.

125363551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13500, while the sum is 31.

The square root of 125363551 is about 11196.5865780603. The cubic root of 125363551 is about 500.4842654891.

The spelling of 125363551 in words is "one hundred twenty-five million, three hundred sixty-three thousand, five hundred fifty-one".