1525020144531 has 16 divisors (see below), whose sum is σ = 2248955558304. Its totient is φ = 913109773824.

The previous prime is 1525020144517. The next prime is 1525020144533. The reversal of 1525020144531 is 1354410205251.

It is not a de Polignac number, because 1525020144531 - 2¹⁴ = 1525020128147 is a prime.

It is a super-2 number, since 2×1525020144531² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1525020144492 and 1525020144501.

It is not an unprimeable number, because it can be changed into a prime (1525020144533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528418566 + ... + 528421451.

It is an arithmetic number, because the mean of its divisors is an integer number (140559722394).

Almost surely, 2^{1525020144531} is an apocalyptic number.

1525020144531 is a deficient number, since it is larger than the sum of its proper divisors (723935413773).

1525020144531 is a wasteful number, since it uses less digits than its factorization.

1525020144531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056840070.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 1525020144531 its reverse (1354410205251), we get a palindrome (2879430349782).

The spelling of 1525020144531 in words is "one trillion, five hundred twenty-five billion, twenty million, one hundred forty-four thousand, five hundred thirty-one".