1021532125 has 32 divisors (see below), whose sum is σ = 1353770496. Its totient is φ = 766931200.

The previous prime is 1021532117. The next prime is 1021532191. The reversal of 1021532125 is 5212351201.

It is not a de Polignac number, because 1021532125 - 2³ = 1021532117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021532096 and 1021532105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1374504 + ... + 1375246.

It is an arithmetic number, because the mean of its divisors is an integer number (42305328).

Almost surely, 2^1021532125 is an apocalyptic number.

It is an amenable number.

1021532125 is a deficient number, since it is larger than the sum of its proper divisors (332238371).

1021532125 is an equidigital number, since it uses as much as digits as its factorization.

1021532125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1021532125 is about 31961.4161920275. The cubic root of 1021532125 is about 1007.1264678136.

Adding to 1021532125 its reverse (5212351201), we get a palindrome (6233883326).

The spelling of 1021532125 in words is "one billion, twenty-one million, five hundred thirty-two thousand, one hundred twenty-five".