745025251 has 4 divisors (see below), whose sum is σ = 746685000. Its totient is φ = 743365504.

The previous prime is 745025213. The next prime is 745025257. The reversal of 745025251 is 152520547.

745025251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 745025251 - 2⁹ = 745024739 is a prime.

It is a super-2 number, since 2×745025251² = 1110125249255226002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745025257) 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, 829201 + ... + 830098.

It is an arithmetic number, because the mean of its divisors is an integer number (186671250).

Almost surely, 2^745025251 is an apocalyptic number.

745025251 is a deficient number, since it is larger than the sum of its proper divisors (1659749).

745025251 is a wasteful number, since it uses less digits than its factorization.

745025251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659748.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 745025251 is about 27295.1506865231. The cubic root of 745025251 is about 906.5470120505.

Adding to 745025251 its reverse (152520547), we get a palindrome (897545798).

The spelling of 745025251 in words is "seven hundred forty-five million, twenty-five thousand, two hundred fifty-one".