20125526707545 has 32 divisors (see below), whose sum is σ = 37350231241728. Its totient is φ = 9062923750848.

The previous prime is 20125526707529. The next prime is 20125526707547. The reversal of 20125526707545 is 54570762552102.

It is a happy number.

It is not a de Polignac number, because 20125526707545 - 2⁴ = 20125526707529 is a prime.

It is a super-2 number, since 2×20125526707545² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20125526707547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1430378659 + ... + 1430392728.

It is an arithmetic number, because the mean of its divisors is an integer number (1167194726304).

Almost surely, 2^{20125526707545} is an apocalyptic number.

It is an amenable number.

20125526707545 is a deficient number, since it is larger than the sum of its proper divisors (17224704534183).

20125526707545 is a wasteful number, since it uses less digits than its factorization.

20125526707545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860771469.

The product of its (nonzero) digits is 5880000, while the sum is 51.

The spelling of 20125526707545 in words is "twenty trillion, one hundred twenty-five billion, five hundred twenty-six million, seven hundred seven thousand, five hundred forty-five".