102861025 has 12 divisors (see below), whose sum is σ = 127807792. Its totient is φ = 82121040.

The previous prime is 102861001. The next prime is 102861061. The reversal of 102861025 is 520168201.

It is a de Polignac number, because none of the positive numbers 2^k-102861025 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9142 + ... + 17008.

Almost surely, 2^102861025 is an apocalyptic number.

It is an amenable number.

102861025 is a deficient number, since it is larger than the sum of its proper divisors (24946767).

102861025 is an equidigital number, since it uses as much as digits as its factorization.

102861025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8400 (or 8395 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 102861025 is about 10142.0424471602. The cubic root of 102861025 is about 468.5438939825.

It can be divided in two parts, 10286 and 1025, that added together give a palindrome (11311).

The spelling of 102861025 in words is "one hundred two million, eight hundred sixty-one thousand, twenty-five".