1025012231 has 4 divisors (see below), whose sum is σ = 1030675464. Its totient is φ = 1019349000.

The previous prime is 1025012213. The next prime is 1025012269. The reversal of 1025012231 is 1322105201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1322105201 = 37 ⋅35732573.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025012231 is a prime.

It is a super-2 number, since 2×1025012231² = 2101300147399194722, 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 (1025012201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2831345 + ... + 2831706.

It is an arithmetic number, because the mean of its divisors is an integer number (257668866).

Almost surely, 2^1025012231 is an apocalyptic number.

1025012231 is a deficient number, since it is larger than the sum of its proper divisors (5663233).

1025012231 is an equidigital number, since it uses as much as digits as its factorization.

1025012231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5663232.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1025012231 is about 32015.8122027226. The cubic root of 1025012231 is about 1008.2688480280.

Adding to 1025012231 its reverse (1322105201), we get a palindrome (2347117432).

The spelling of 1025012231 in words is "one billion, twenty-five million, twelve thousand, two hundred thirty-one".