210542420525 has 24 divisors (see below), whose sum is σ = 262070809728. Its totient is φ = 167790600000.

The previous prime is 210542420489. The next prime is 210542420537. The reversal of 210542420525 is 525024245012.

It is not a de Polignac number, because 210542420525 - 2²² = 210538226221 is a prime.

It is a super-2 number, since 2×210542420525² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210542420491 and 210542420500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14462000 + ... + 14476550.

It is an arithmetic number, because the mean of its divisors is an integer number (10919617072).

Almost surely, 2^210542420525 is an apocalyptic number.

210542420525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210542420525 is a deficient number, since it is larger than the sum of its proper divisors (51528389203).

210542420525 is a wasteful number, since it uses less digits than its factorization.

210542420525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16733 (or 16728 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

Adding to 210542420525 its reverse (525024245012), we get a palindrome (735566665537).

The spelling of 210542420525 in words is "two hundred ten billion, five hundred forty-two million, four hundred twenty thousand, five hundred twenty-five".