10521002025 has 36 divisors (see below), whose sum is σ = 18904615548. Its totient is φ = 5593236480.

The previous prime is 10521002003. The next prime is 10521002057. The reversal of 10521002025 is 52020012501.

It can be written as a sum of positive squares in 6 ways, for example, as 579316761 + 9941685264 = 24069^2 + 99708^2 .

It is not a de Polignac number, because 10521002025 - 2⁶ = 10521001961 is a prime.

It is a super-2 number, since 2×10521002025² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10521001989 and 10521002007.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4272 + ... + 145121.

Almost surely, 2^10521002025 is an apocalyptic number.

10521002025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10521002025 is a deficient number, since it is larger than the sum of its proper divisors (8383613523).

10521002025 is a wasteful number, since it uses less digits than its factorization.

10521002025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149722 (or 149714 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

Adding to 10521002025 its reverse (52020012501), we get a palindrome (62541014526).

The spelling of 10521002025 in words is "ten billion, five hundred twenty-one million, two thousand, twenty-five".