125511413 has 2 divisors, whose sum is σ = 125511414. Its totient is φ = 125511412.

The previous prime is 125511403. The next prime is 125511427. The reversal of 125511413 is 314115521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115820644 + 9690769 = 10762^2 + 3113^2 .

It is a cyclic number.

It is not a de Polignac number, because 125511413 - 2²⁰ = 124462837 is a prime.

It is a super-2 number, since 2×125511413² = 31506229586513138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125511403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62755706 + 62755707.

It is an arithmetic number, because the mean of its divisors is an integer number (62755707).

Almost surely, 2^125511413 is an apocalyptic number.

It is an amenable number.

125511413 is a deficient number, since it is larger than the sum of its proper divisors (1).

125511413 is an equidigital number, since it uses as much as digits as its factorization.

125511413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600, while the sum is 23.

The square root of 125511413 is about 11203.1876267427. The cubic root of 125511413 is about 500.6809561764.

Adding to 125511413 its reverse (314115521), we get a palindrome (439626934).

The spelling of 125511413 in words is "one hundred twenty-five million, five hundred eleven thousand, four hundred thirteen".