125521560151 has 16 divisors (see below), whose sum is σ = 142372629504. Its totient is φ = 109792593504.

The previous prime is 125521560137. The next prime is 125521560167. The reversal of 125521560151 is 151065125521.

It is a cyclic number.

It is not a de Polignac number, because 125521560151 - 2³¹ = 123374076503 is a prime.

It is a super-2 number, since 2×125521560151² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125521560251) 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 in 15 ways as a sum of consecutive naturals, for example, 1929711 + ... + 1993696.

It is an arithmetic number, because the mean of its divisors is an integer number (8898289344).

Almost surely, 2^125521560151 is an apocalyptic number.

125521560151 is a deficient number, since it is larger than the sum of its proper divisors (16851069353).

125521560151 is a wasteful number, since it uses less digits than its factorization.

125521560151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3923550.

The product of its (nonzero) digits is 15000, while the sum is 34.

Adding to 125521560151 its reverse (151065125521), we get a palindrome (276586685672).

The spelling of 125521560151 in words is "one hundred twenty-five billion, five hundred twenty-one million, five hundred sixty thousand, one hundred fifty-one".