125021511653 has 2 divisors, whose sum is σ = 125021511654. Its totient is φ = 125021511652.

The previous prime is 125021511607. The next prime is 125021511739. The reversal of 125021511653 is 356115120521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113419421284 + 11602090369 = 336778^2 + 107713^2 .

It is a cyclic number.

It is not a de Polignac number, because 125021511653 - 2¹⁰ = 125021510629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125021511253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62510755826 + 62510755827.

It is an arithmetic number, because the mean of its divisors is an integer number (62510755827).

Almost surely, 2^125021511653 is an apocalyptic number.

It is an amenable number.

125021511653 is a deficient number, since it is larger than the sum of its proper divisors (1).

125021511653 is an equidigital number, since it uses as much as digits as its factorization.

125021511653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 125021511653 in words is "one hundred twenty-five billion, twenty-one million, five hundred eleven thousand, six hundred fifty-three".