152421525 has 36 divisors (see below), whose sum is σ = 273993252. Its totient is φ = 80997120.

The previous prime is 152421523. The next prime is 152421527. The reversal of 152421525 is 525124251.

It is an interprime number because it is at equal distance from previous prime (152421523) and next prime (152421527).

It can be written as a sum of positive squares in 6 ways, for example, as 63345681 + 89075844 = 7959^2 + 9438^2 .

It is not a de Polignac number, because 152421525 - 2¹ = 152421523 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152421523) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 70257 + ... + 72393.

Almost surely, 2^152421525 is an apocalyptic number.

152421525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

152421525 is a deficient number, since it is larger than the sum of its proper divisors (121571727).

152421525 is a wasteful number, since it uses less digits than its factorization.

152421525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470 (or 2462 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 152421525 is about 12345.9112664882. The cubic root of 152421525 is about 534.1732068690.

Adding to 152421525 its reverse (525124251), we get a palindrome (677545776).

The spelling of 152421525 in words is "one hundred fifty-two million, four hundred twenty-one thousand, five hundred twenty-five".