1025251087 has 8 divisors (see below), whose sum is σ = 1171957536. Its totient is φ = 878605152.

The previous prime is 1025251069. The next prime is 1025251187. The reversal of 1025251087 is 7801525201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025251087 is a prime.

It is a super-2 number, since 2×1025251087² = 2102279582789363138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025251037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30273 + ... + 54469.

It is an arithmetic number, because the mean of its divisors is an integer number (146494692).

Almost surely, 2^1025251087 is an apocalyptic number.

1025251087 is a deficient number, since it is larger than the sum of its proper divisors (146706449).

1025251087 is an equidigital number, since it uses as much as digits as its factorization.

1025251087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30257.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 1025251087 is about 32019.5422671843. The cubic root of 1025251087 is about 1008.3471600560.

Adding to 1025251087 its reverse (7801525201), we get a palindrome (8826776288).

The spelling of 1025251087 in words is "one billion, twenty-five million, two hundred fifty-one thousand, eighty-seven".