1025145401 has 4 divisors (see below), whose sum is σ = 1171594752. Its totient is φ = 878696052.

The previous prime is 1025145377. The next prime is 1025145439. The reversal of 1025145401 is 1045415201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025145401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025145461) 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, 73224665 + ... + 73224678.

It is an arithmetic number, because the mean of its divisors is an integer number (292898688).

Almost surely, 2^1025145401 is an apocalyptic number.

It is an amenable number.

1025145401 is a deficient number, since it is larger than the sum of its proper divisors (146449351).

1025145401 is an equidigital number, since it uses as much as digits as its factorization.

1025145401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146449350.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1025145401 is about 32017.8918887549. The cubic root of 1025145401 is about 1008.3125110348.

The spelling of 1025145401 in words is "one billion, twenty-five million, one hundred forty-five thousand, four hundred one".