145225267457 has 4 divisors (see below), whose sum is σ = 149909953536. Its totient is φ = 140540581380.

The previous prime is 145225267441. The next prime is 145225267471. The reversal of 145225267457 is 754762522541.

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 not a de Polignac number, because 145225267457 - 2⁴ = 145225267441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145225267477) 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, 2342342993 + ... + 2342343054.

It is an arithmetic number, because the mean of its divisors is an integer number (37477488384).

Almost surely, 2^145225267457 is an apocalyptic number.

It is an amenable number.

145225267457 is a deficient number, since it is larger than the sum of its proper divisors (4684686079).

145225267457 is an equidigital number, since it uses as much as digits as its factorization.

145225267457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684686078.

The product of its digits is 4704000, while the sum is 50.

Adding to 145225267457 its reverse (754762522541), we get a palindrome (899987789998).

The spelling of 145225267457 in words is "one hundred forty-five billion, two hundred twenty-five million, two hundred sixty-seven thousand, four hundred fifty-seven".