45025981 has 32 divisors (see below), whose sum is σ = 62447616. Its totient is φ = 31320000.

The previous prime is 45025961. The next prime is 45026011. The reversal of 45025981 is 18952054.

It is a 4-Lehmer number, since φ(45025981) divides (45025981-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 45025981 - 2¹⁹ = 44501693 is a prime.

It is a super-2 number, since 2×45025981² = 4054677930024722, which contains 22 as substring.

It is a deceptive number, since it divides R_45025980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45025961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30306 + ... + 31756.

It is an arithmetic number, because the mean of its divisors is an integer number (1951488).

Almost surely, 2^45025981 is an apocalyptic number.

It is an amenable number.

45025981 is a deficient number, since it is larger than the sum of its proper divisors (17421635).

45025981 is a wasteful number, since it uses less digits than its factorization.

45025981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 45025981 is about 6710.1401624705. The cubic root of 45025981 is about 355.7577703496.

The spelling of 45025981 in words is "forty-five million, twenty-five thousand, nine hundred eighty-one".