145125520252 has 36 divisors (see below), whose sum is σ = 260690569776. Its totient is φ = 70677859840.

The previous prime is 145125520231. The next prime is 145125520259. The reversal of 145125520252 is 252025521541.

It is a super-2 number, since 2×145125520252² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145125520259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1919388 + ... + 1993564.

It is an arithmetic number, because the mean of its divisors is an integer number (7241404716).

Almost surely, 2^145125520252 is an apocalyptic number.

It is an amenable number.

145125520252 is a deficient number, since it is larger than the sum of its proper divisors (115565049524).

145125520252 is an equidigital number, since it uses as much as digits as its factorization.

145125520252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74418 (or 74333 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 145125520252 in words is "one hundred forty-five billion, one hundred twenty-five million, five hundred twenty thousand, two hundred fifty-two".