1025001431 has 4 divisors (see below), whose sum is σ = 1028235192. Its totient is φ = 1021767672.

The previous prime is 1025001407. The next prime is 1025001457. The reversal of 1025001431 is 1341005201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025001431 is a prime.

It is a super-2 number, since 2×1025001431² = 2101255867104095522, 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 (1025001401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616405 + ... + 1617038.

It is an arithmetic number, because the mean of its divisors is an integer number (257058798).

Almost surely, 2^1025001431 is an apocalyptic number.

1025001431 is a deficient number, since it is larger than the sum of its proper divisors (3233761).

1025001431 is an equidigital number, since it uses as much as digits as its factorization.

1025001431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233760.

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

The square root of 1025001431 is about 32015.6435356218. The cubic root of 1025001431 is about 1008.2653068209.

Adding to 1025001431 its reverse (1341005201), we get a palindrome (2366006632).

The spelling of 1025001431 in words is "one billion, twenty-five million, one thousand, four hundred thirty-one".